Selector Valve Bolt Insertion Hole Crosses Valve Opening
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Solution Overview
Problem
The existing selector valve devices require a mounting bolt that increases the valve body width when multiple valves are aligned on a base member, leading to a larger overall size, and existing solutions complicate the structure by using multiple locking points instead of a bolt.
Innovation Solution
A selector valve device with a valve body featuring a bolt insertion hole that crosses the valve hole, allowing the mounting bolt to pass through a recessed escape portion, and an operating member with a projection and guide groove to prevent rotation, enabling easy mounting without increasing the valve body width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a mounting bolt is inserted through a bolt insertion hole that does not cross the valve hole, then the valve body can be mounted on the base member, but the lateral width of the valve body is increased
Solution Approach 1:
The bolt insertion hole is positioned to cross the valve hole in the lateral direction rather than parallel to it, changing the spatial dimension of bolt insertion. This allows the bolt to pass through the valve body width without increasing it, as the bolt trajectory intersects the valve hole axis rather than running parallel to it
2Length of stationary object
If a mounting bolt crosses the valve hole and operating member, then the valve body width is reduced, but the operating member may contact the mounting bolt causing rotation or malfunction
Solution Approach 1:
The operating member is segmented with an escape portion (through-hole or recess) that separates the bolt passage area from the functional areas. This segmentation allows the bolt to cross the valve hole without contacting the operating member, preventing rotation or malfunction while maintaining reduced valve body width
Solution Approach 2:
The escape portion acts as an intermediary structure that mediates between the mounting bolt and the operating member. It provides a dedicated passage for the bolt while protecting the operating member from direct contact, ensuring both mounting security and operational reliability
3Length of stationary object
If multiple locking engagement fittings are used to mount the valve body without a mounting bolt, then the valve body width is reduced, but the structure becomes extremely complicated
Solution Approach 1:
The single mounting bolt performs multiple functions: it secures the valve body to the base member, crosses the valve hole to maintain compact width, and passes through the escape portion to avoid the operating member. This universal approach replaces multiple specialized locking fittings with one multi-functional fastening element, simplifying the overall mounting mechanism
Data Source
AI summary
On a valve body of a selector valve mounted on a base member, a bolt insertion hole extending across a valve hole within a width of the valve body is formed, a mounting bolt is inserted into the bolt insertion hole so as to cross the valve hole and a valve member. A distal end of the mounting bolt is screwed into a screw hole of the base member so as to fix the selector valve to the base member, while on the valve member, in order to avoid contact between the valve member and the mounting bolt, a hole-shaped or recess-shaped escape portion extending longer in an operating direction of the valve member is formed, and the mounting bolt is inserted through the escape portion.